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100+ Free VCE Applied Computing Data Analytics Practice Questions
Victorian Certificate of Education Applied Computing: Data Analytics Units 3 and 4 practice questions are available now; exam metadata is being verified.
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VCE Applied Computing: Data Analytics (Units 3 & 4) is accredited by the Victorian Curriculum and Assessment Authority (VCAA). Assessment includes a 2-hour end-of-year written examination (50% weighting) and a School-Assessed Task (SAT) project spanning Units 3 & 4 (30% weighting), alongside unit SACs (20%). This 100-question practice bank delivers key-verified multiple-choice practice with detailed explanations across database design, SQL, data visualization, cybersecurity, and the Problem-Solving Methodology.
Sample VCE Applied Computing Data Analytics Practice Questions
Try these sample questions to test your VCE Applied Computing Data Analytics exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Which of the following best defines primary data in the context of data acquisition for a research project?
A.Data collected directly by the researcher first-hand for a specific purpose
B.Data extracted from published academic journals and government databases
C.Data that has been processed and normalized into Third Normal Form
D.Data stored in historical backup archives after initial system usage
Explanation: Primary data is collected directly by the researcher or organization for a specific research goal, ensuring high relevance and known provenance. Secondary data consists of pre-existing information collected by third parties for other purposes.
2Which attribute of data integrity refers to ensuring that data is genuine, comes from a verified origin, and has not been forged?
A.Authenticity
B.Accuracy
C.Currency
D.Completeness
Explanation: Authenticity guarantees that data originates from an identified, trustworthy source and has not been falsified. Accuracy relates to truthfulness, currency relates to timeliness, and completeness ensures all required data elements are present.
3In a relational database, what is the primary role of a Primary Key?
A.To uniquely identify each record within a database table
B.To establish a connection to a table in an external database
C.To enforce security permissions for user read/write access
D.To calculate summary totals for numeric columns in queries
Explanation: A Primary Key is an attribute or combination of attributes that uniquely identifies each row in a database table. It prevents duplicate rows and ensures entity integrity.
4When linking two relational tables, what is the field in a child table that references the Primary Key of a parent table called?
A.Foreign Key
B.Candidate Key
C.Surrogate Key
D.Composite Key
Explanation: A Foreign Key is an attribute in a child table that references the Primary Key of a parent table, maintaining referential integrity across the relational schema.
5Which SQL clause is used to filter records so that only rows satisfying a specific condition are retrieved?
A.WHERE
B.SELECT
C.GROUP BY
D.ORDER BY
Explanation: The WHERE clause filters rows based on specified logical criteria before aggregation or sorting takes place. SELECT specifies columns, GROUP BY aggregates rows, and ORDER BY sorts output.
6During data cleansing, an analyst notices multiple identical entries for the same customer under slightly different customer IDs. What data cleansing task must be performed?
A.Deduplication and record reconciliation
B.Database normalization to Third Normal Form
C.Data encryption using AES-256
D.Format conversion from JSON to XML
Explanation: Deduplication involves identifying and merging or removing redundant records that represent the same real-world entity. Normalization modifies schema structure, while encryption and format conversion do not remove duplicate records.
7What is a key advantage of acquiring primary data through an online automated survey compared to paper-based questionnaires?
A.Real-time data entry reducing manual transcription errors
B.Guaranteed 100% response rate across all demographic groups
C.Elimination of the need to obtain informed user consent
D.Automatic protection against biased survey questions
Explanation: Automated online surveys capture respondent input directly into digital databases, eliminating manual data entry mistakes and speeding up processing. Response rates vary, consent is still required, and software cannot detect biased question wording.
8In a school database, one Teacher can teach many Classes, but each Class is assigned to only one Lead Teacher. What cardinality exists between Teacher and Class?
A.One-to-Many (1:N)
B.One-to-One (1:1)
C.Many-to-Many (M:N)
D.Recursive self-reference
Explanation: A One-to-Many (1:N) relationship exists when a single record in entity A (Teacher) relates to multiple records in entity B (Classes), but each record in entity B relates to only one record in entity A.
9A financial analyst relies on stock market prices collected 48 hours ago to execute real-time automated trades. Which data integrity attribute is compromised in this scenario?
A.Currency
B.Accuracy
C.Authenticity
D.Completeness
Explanation: Currency refers to the timeliness and freshness of data relative to when it is used. In high-frequency stock trading, 48-hour-old data is stale and compromises currency.
10A database table contains a column named PhoneNumbers storing multiple comma-separated phone numbers for a single customer. Which rule of database normalization does this violate?
A.First Normal Form (1NF), because values must be atomic
B.Second Normal Form (2NF), due to partial key dependency
C.Third Normal Form (3NF), due to transitive dependency
D.Boyce-Codd Normal Form (BCNF), due to overlapping candidate keys
Explanation: First Normal Form (1NF) requires that all attributes contain atomic (indivisible) values and that repeating groups or arrays stored in a single cell are eliminated.
About the VCE Applied Computing Data Analytics Practice Questions
Verified exam format metadata for Victorian Certificate of Education Applied Computing: Data Analytics Units 3 and 4 is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.